2011

This final report presents the results of work undertaken between August 2009 and July 2011. We present the results of monthly surveys of birds that collided with the lines under study. In this period, removal by scavengers tests were also conducted (RPN), the percentage found by the observers was studied (PEO), and censuses for crossing rates and studies of the impact of Firefly devices on the landscape and soundscape were conducted. This report presents the efficacy results obtained and presents recommendations regarding the use of Firefly's in the marking of MAT Lines, and also presents the findings from REN, SA. regarding the use of these devices in the National Transmission Grid.

The following were objectives of this study:
a) Assess the effectiveness of anti-collision devices in reducing collision of wild birds with cables of electricity transmission lines in high voltage (LMAT) in Portugal;
b) To evaluate the effectiveness of new "Firefly" devices on the market, installed on an experimental basis;
c) Determine the impact of Firefly marking devices on the landscape during the day and at night;
d) Determine the impacts of Firefly marking devices on the soundscape;
e) Identify the criteria for the use of different anti-collision devices (SPIRAL and Firefly);
f) Contribute to making electricity transmission compatible with the conservation of particularly threatened wild birds.